how can we know there is change in unban sprawl?
Answers
Answer:
Metropolises expand and contract. It is estimated that 40% of Europe’s cities are shrinking (though this is a trend that migration might help to reverse). Even in Africa, there are some countries where the percentage of the total population living in cities has declined at various times over the past two decades.
Overall, however, our current urban population of around 3.9 billion is expected to grow to around 6.34 billion by 2050, out of a total global population of at least 9.5 billion. If we continue to design and build as if the planet can provide unlimited resources, then this near-doubling of the urban population will mean a doubling of the natural resources required to build and operate our cities – which is not sustainable.
The Eixample district in Barcelona, one of the most densely populated cities. Photograph: Amos Chapple/Rex
As cities grow, perhaps our most serious concern should be how they expand out into the surrounding countryside. Contrary to popular belief, over the past century urban settlements have not only expanded demographically, they have also sprawled outwards – covering some of the world’s most valuable farmland in the process.
Continued urbanisation in its current form could threaten global food supplies
The result has been a steady de-densification of urban settlements, by about –2% per annum. Even where inner-city areas have densified over the past few decades (Copenhagen, for example), the citywide trend is still for an overall reduction in average densities.
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The migration of people from highly dense urban are to low density residential development over rural land is called urban sprawl.
Explanation:
- These urban sprawl results in increase in public expenditure. More people will start to use their vehicles as they have to travel a long distance to reach their work place, the traffic will increase.
- This will cause increase in traffic pollution. Other environment issues will also result due to felling of trees and displacement of the wildlife that lived in this area.
To learn more:
1. Much study had been done (change the voice):
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